I’m having this issue as well, on a standalone blog using the Twenty Eleven 1.2 theme by the WordPress team. I installed it via the dashboard installer. It shows up in the widget selector just fine and I can configure it, but it doesn’t appear in the widget sidebar.

I have checked the plugin with upto WP version 3.3, with various themes, and very much with the Twenty Eleven theme and it works perfectly. If you are having a problem, it could be due to something specific to your site. Please include a link to your site so that I can check, otherwise there is nothing much I can do.

I’m on version 3.3.1 – had hte same experience as dsafire as far everything seeming fine, but nothing showing up. I’m not useing Twenty Eleven though. I’m using Codium Extend. You can see the site at jacobcorvidae.com — the widget is supposed to show up right above the noisetrade widget which is the only other thing on the sidebar. Any suggestions?

I too cannot get this to display in my sidebar. Using v3.3.1, child theme of 2010. It appears as a widget to drag around, but won’t appear. I can drag other widgets into the same area, and they do show.